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Emergency Medicine

Hong K. Kim, MD

Works at hospitals in Columbia, MD · Baltimore, MD · Maryland

Summary

Dr. Hong K. Kim, MD is an emergency medicine doctor at 4940 Eastern Ave, Baltimore, MD 21224. May accept Medicare assignment. In 2024, Hong K. Kim had 366 Original Medicare patients and 403 services. NPI 1356541957. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 4940 Eastern Ave, Baltimore, MD 21224 · Directions (2 more locations)
  • Medicare: May accept Medicare assignment
  • Hospitals: Johns Hopkins Howard County Medical Center, Mercy Medical Center Inc
  • Group practice: Johns Hopkins University
  • Medical school: University Of California, San Francisco School Of Medicine · graduated 2002 (24 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Hong K. Kim, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Hong K. Kim accept Medicare assignment?
Medicare's clinician data says Hong K. Kim may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Hong K. Kim see?
In 2024, CMS data shows 366 Original Medicare patients and 403 services for Hong K. Kim. This counts Original Medicare only and measures volume, not quality.
What is Hong K. Kim's NPI number?
1356541957. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Hong K. Kim, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients366
Services billed to Medicare403
Different services or procedures13
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)227 services
  2. Emergency department visit with moderate level of medical decision making (99284)119 services
  3. Emergency department visit with low level of medical decision making (99283)31 services
  4. Critical care, first 30-74 minutes (99291)14 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis61%
  • Diabetes47%
  • Depression43%
  • Chronic kidney disease42%

Hospitals where Hong K. Kim works

Medicare's Facility Affiliation Data lists Hong K. Kim at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Hong K. Kim is enrolled with Medicare (CMS data updated October 2, 2026).

  • 4940 Eastern AveBaltimore, MD 21224
  • 5755 Cedar LnColumbia, MD 21044
  • 5759 Cedar LnColumbia, MD 21044

Group practices

Medicare enrollment lists Hong K. Kim as a member of this group (CMS data updated October 2, 2026).

  • Johns Hopkins University2,909 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Maryland →

Other emergency medicine doctors in Baltimore

Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.

All emergency medicine doctors in Baltimore →

Other clinicians in Johns Hopkins University

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Francisco School Of Medicine
Graduation year2002 (24 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1356541957
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians